Question

A piece of string is $30cm$ long.What will be the length of each side if the string is used to form a square ?

Answer 1

Each side of square $=\frac{perimeter}{4}$

$$\begin{gathered} =\frac{stringlength}{4} \\ =\frac{30}{4} \\ =7.5cm \end{gathered}$$

Hence each side of square is $7.5cm$.